1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS5745F AEROSPACE MATERIAL SPECIFICATION AMS5745 REV. F Issued 1959-01Revised 20
5、03-07 Reaffirmed 2014-06 Superseding AMS5745E Steel, Corrosion and Heat-Resistant, Bars and Forgings 16.5Cr - 4.5Ni - 2.9Mo - 0.10N Equalized and Over-Tempered (Composition similar to UNS S35000) RATIONALE This document has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE:1.1
6、 Form: This specification covers a corrosion and heat resistant steel in the form of bars, forgings, and forging stock. 1.2 Application: These products have been used typically for parts requiring oxidation resistance and high strength up to 800 F (427 C) and which may require welding during fabrica
7、tion, but usage is not limited to such applications.2. APPLICABLE DOCUMENTS: The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a speci
8、fic document issue is specified. When the referenced document has been canceled and no superseding document has been specified, the last published issue of that document shall apply.SAE INTERNATIONAL AMS5745F Page 2 of 7 2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, P
9、A 15096-0001 or www.sae.org.AMS 2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and WireAMS 2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron AlloysAMS 2371 Qualit
10、y Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging StockAMS 2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy ForgingsAMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and
11、 Alloy Steels and Corrosion and Heat-Resistant Steels and AlloysAMS 2808 Identification, Forgings2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org.ASTM A 370 Mechanical Testing of Steel ProductsASTM E 353 Chemical Analysis of Stainles
12、s, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E 353, by spectrochemical methods, or by other analytical meth
13、ods acceptable to purchaser.TABLE 1 - CompositionElement min maxCarbon 0.07 0.11Manganese 0.50 1.25Silicon - 0.50Phosphorus - 0.040Sulfur - 0.030Chromium 16.00 17.00Nickel 4.00 5.00Molybdenum 2.50 3.25Nitrogen 0.07 0.13SAE INTERNATIONAL AMS5745F Page 3 of 7 3.1.1 Check Analysis: Composition variatio
14、ns shall meet the applicable requirements of AMS 2248.3.2 Melting Practice: Steel shall be multiple melted using consumable electrode practice in the remelt cycle.3.3 Condition: The product shall be supplied in the following condition:3.3.1 Bars: 3.3.1.1 Rounds: Equalized, over-tempered, and ground,
15、 turned, or polished.3.3.1.2 Shapes: Cold drawn, equalized, over-tempered, and descaled.3.3.1.3 Flats: Hot finished, equalized, over-tempered, and descaled.3.3.2 Forgings: Equalized, over-tempered, and descaled.3.3.3 Forging Stock: As ordered by the forging manufacturer.3.4 Heat Treatment: Bars and
16、forgings shall be equalized by heating to 1400 F 50 (760 C 28), holding at heat for not less than three hours, and cooling in air to 90 F (32 C) or lower, and over-tempered by heating to 1100 F 25 (593 C 14), holding at heat for not less than three hours, and cooling in air.3.5 Properties: The produ
17、ct shall conform to the following requirements; hardness and tensile testing shall be performed in accordance with ASTM A 370:3.5.1 Bars and Forgings: 3.5.1.1 As Equalized and Over-Tempered: 3.5.1.1.1 Hardness: Shall be not higher than 363 HB, or equivalent (See 8.2), except that bars 0.625 inch (15
18、.88 mm) and under in nominal diameter may have hardness as high as 375 HB, or equivalent (See 8.2).SAE INTERNATIONAL AMS5745F Page 4 of 7 3.5.1.2 Response to Heat Treatment: Bars and forgings shall have the properties shown in Table 2 after being solution heat treated by heating to 1900 F 25 (1038 C
19、 14), holding at heat for 1 to 3 hours, and quenching in water; cooled to -100 F (-73 C) or colder, holding at this temperature for not less than three hours, and warming in air to room temperature; austenite conditioned by heating to 1750 F 25 (954 C 14), holding at heat for 10 to 60 minutes, and q
20、uenching in water; cooled to -100 F (-73 C) or colder, holding at this temperature for not less than three hours, and warming in air to room temperature; and tempered by heating to 1000 F 25 (538 C 14), holding at heat for not less than three hours, and cooling in air.3.5.1.2.1 Tensile Properties: S
21、hall be as shown in Table 2:3.5.1.2.2 Hardness: Shall be 37 to 48 HRC, or equivalent (See 8.2). Product shall not be rejected on the basis of hardness if the tensile properties of 3.5.1.2.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness or from
22、 another sample with similar nonconforming hardness.3.5.2 Forging Stock: When a sample of stock is forged to a test coupon and heat treated as in 3.4 and 3.5.1.2, specimens taken from the heat treated coupon shall conform to the requirements of 3.5.1.2.1 and 3.5.1.2.2. If specimens taken from the st
23、ock after heat treatment as in 3.4 and 3.5.1.2 conform to the requirements of 3.5.1.2.1 and 3.5.1.2.2, the tests shall be accepted as equivalent to tests of a forged coupon.3.6 Quality: The product, as received by purchaser, shall be uniform in quality and condition, essentially free of grain bounda
24、ry carbides, sound, and free from foreign materials and from imperfections detrimental to usage of the product.3.6.1 Grain flow of die forgings, except in areas which contain flash-line end grain, shall follow the general contour of the forgings, showing no evidence of re-entrant grain flow.3.7 Tole
25、rances: Bars shall conform to all applicable requirements of AMS 2241.TABLE 2 - Minimum Tensile PropertiesProperty ValueTensile Strength 165 ksi (1138 MPa)Yield Strength at 0.2% Offset 140 ksi ( 965 MPa)Elongation in 4D 10%Reduction of Area 20%SAE INTERNATIONAL AMS5745F Page 5 of 7 4. QUALITY ASSURA
26、NCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of the product shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that t
27、he product conforms to specified requirements.4.2 Classification of Tests: 4.2.1 Acceptance Tests: The following requirements are acceptance tests and shall be performed on each heat or lot as applicable:4.2.1.1 Composition (3.1) of each heat.4.2.1.2 Hardness (3.5.1.1.1) of each lot of bars and forg
28、ings as equalized and over-tempered.4.2.1.3 Tensile properties (3.5.1.2.1) and hardness (3.5.1.2.2) of each lot of bars and forgings after solution heat treatment, sub-zero cooling, austenite conditioning, sub-zero cooling, and tempering.4.2.1.4 Tolerances (3.7) of bars.4.2.2 Periodic Tests: Tests o
29、f forging stock (3.5.2) to demonstrate ability to develop required properties and grain flow of die forgings (3.6.1) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser.4.3 Sampling and Testing: Shall be as follows:4.3
30、.1 Bars, and Forging Stock: In accordance with AMS 2371.4.3.2 Forgings: In accordance with AMS 2374.4.4 Reports: The vendor of the product shall furnish with each shipment a report showing the results of tests for composition of each heat and for hardness of each lot as received and tensile properti
31、es and hardness of each lot after solution heat treatment, sub-zero cooling, austenite conditioning, sub-zero cooling, and tempering, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS 5745F, size,
32、 and quantity. If forgings are supplied, the size and melt source of stock used to make the forgings shall also be included.SAE INTERNATIONAL AMS5745F Page 6 of 7 4.5 Resampling and Retesting: Shall be as follows:4.5.1 Bars and Forging Stock: In accordance with AMS 2371.4.5.2 Forgings: In accordance
33、 with AMS 2374.5. PREPARATION FOR DELIVERY: 5.1 Sizes: Except when exact lengths or multiples of exact lengths are ordered, straight bars will be acceptable in mill lengths of 6 to 20 feet (1.8 to 6.1 m) but not more than 10% of any shipment shall be supplied in lengths shorter than 10 feet (3 m).5.
34、2 Identification: Shall be as follows:5.2.1 Bars: In accordance with AMS 2806.5.2.2 Forgings: In accordance with AMS 2808.5.2.3 Forging Stock: As agreed upon by purchaser and vendor.5.3 Packaging: The product shall be prepared for shipment in accordance with commercial practice and in compliance wit
35、h applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENT: A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase ord
36、ers.7. REJECTIONS: Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.SAE INTERNATIONAL AMS5745F Page 7 of 7 8. NOTES:8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where techni
37、cal revisions, not editorial changes, have been made to the previous issue of this specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revisions. Change bars and (R) are not used in original publications, nor in speci
38、fications that contain editorial changes only.8.2 Hardness conversion tables for metals are presented in ASTM E 140.8.3 Terms used in AMS are clarified in ARP1917.8.4 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and
39、the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information.8.5 Procurement documents should specify not less than the following: AMS 5745FForm and size or part number of product desiredQuantity of product desired.PREPARED UNDER THE JURSDICTION OF AMS COMMITTEE “F”
